Solar Panels in Knocklyon, Co. Dublin
Knocklyon is a small town in Co. Dublin with a population of around 500. Located 8.3 km from Dublin, the area has a solar yield of 751 kWh/kWp. A 4kWp solar system generates approximately 3,004 kWh annually, saving an estimated €901+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
Knocklyon solar yield and performance data
| Solar Metric | Value |
|---|---|
| Solar Yield | 751 kWh/kWp |
| 4kWp System Output | 3,004 kWh/yr |
| Sunshine Hours | 1,514 hrs/yr |
| Est. Annual Savings | €901+ |
| Household Coverage | 72% of avg use |
Solar yield calculated for Knocklyon (53.28°N, 6.32°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Knocklyon
kWh per month (4kWp system)
Knocklyon at a Glance
| Area Data | Value |
|---|---|
| Population | 500 (Census 2022) |
| Houses/Bungalows (Co. Dublin avg.) | 71% of dwellings |
| Owner-Occupied (Co. Dublin avg.) | 57% |
| Built Before 2000 (Co. Dublin avg.) | 73% |
| Avg. Rooms per Home (Co. Dublin avg.) | 4.8 |
| Elevation | 72 metres |
| Eircode Area | D16 |
| Dist. to Dublin | 8.3 km |
| Location | Inland |
| Coordinates | 53.2839°N, 6.3182°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Casement Aerodrome, 8.4 km).
Weather & Climate in Knocklyon
Weather data from Met Eireann (Casement Aerodrome station, 8.4 km from Knocklyon). 5-year average (2019–2023).
Solar Suitability in Knocklyon
Across Co. Dublin, 71% of dwellings are houses or bungalows, with good potential for rooftop solar installations. 57% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 73% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Going Solar in Knocklyon
Knocklyon is a small town in Co. Dublin with a population of 500 (CSO Census 2022). It is conveniently close to Dublin (8.3 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Knocklyon is D16. You'll need your full Eircode when applying for the SEAI grant. Across the wider Dublin area, 71% of dwellings are houses or bungalows and 57% are owner-occupied (Census 2022). Homeowners in Knocklyon with a south, east, or west-facing roof are well positioned for solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 3,004 kWh per year (751 kWh/kWp). The area has relatively low rainfall (804 mm/yr), with a mean temperature of 10.2°C.
Solar panel benefits in Knocklyon, Dublin
Save on Electricity Bills
Homeowners in Knocklyon can save an estimated €901+ per year on electricity with a 4kWp solar system generating 3,660 kWh annually.
SEAI Grant: Up to €1,800
Get up to €1,800 back from SEAI. The grant is available for homes built before 2021. No means testing. Apply online at seai.ie.
0% VAT on Installation
Residential solar installations are zero-rated for VAT since May 2023, saving approximately €1,000 on a typical system.
Earn from Excess Energy
Sell surplus electricity at 15-25c/kWh through the Microgeneration Support Scheme. The first €400/year is tax-free.
Top Solar County in Ireland
Co. Dublin ranks #4 in Ireland for solar yield with 915 kWh/kWp. Homes in Knocklyon benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in Knocklyon today will generate clean electricity for 25-30 years with minimal maintenance.
Knocklyon SEAI solar PV grant details
Homeowners in Knocklyon, Co. Dublin can apply for the SEAI solar PV grant. The maximum grant of €1,800 is confirmed for 2026.
| System Size | Grant Amount | Typical Net Cost |
|---|---|---|
| 2 kWp | €1,400 | €2,000 - €3,000 |
| 3 kWp | €1,600 | €2,500 - €4,000 |
| 4 kWp+ | €1,800 (max) | €3,200 - €6,200 |
Solar Installers in Dublin
SEAI registered solar panel installers covering Dublin.
Top Rated Solar Installers Near Knocklyon
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Solar Panel FAQs for Knocklyon
How much do solar panels cost in Knocklyon?
A 4kWp system in Knocklyon typically costs €5,000-€8,000 before grants. After the €1,800 SEAI grant and 0% VAT, the net cost is €3,200-€6,200. The system generates approximately 3,660 kWh/year, paying for itself in 4-6 years.
Can I add a battery to my solar system?
Yes. A home battery (typically 5-10 kWh) stores excess solar electricity for evening use. This increases your self-consumption from around 30-40% to 60-80%. Batteries currently cost €3,000-€6,000 and are not yet covered by the SEAI grant.
Do I need a smart meter for solar panels?
You need a smart meter to sell surplus electricity back to the grid. ESB Networks installs smart meters for free. Your installer submits the NC6 form to ESB Networks after installation, which triggers the meter upgrade if needed.
What is the difference between solar PV and solar thermal?
Solar PV panels generate electricity from sunlight. Solar thermal panels heat water directly. For most Irish homes, solar PV is the better investment: it's more versatile, qualifies for the SEAI grant, and you can sell excess electricity. Solar thermal only heats water.
Do solar panels work in winter in Dublin?
Yes, solar panels generate electricity all year round. While output is lower in winter, Dublin still receives usable daylight hours even in December. Annual generation figures (3,660 kWh for a 4kWp system) already account for seasonal variation.
How does shading affect solar panels in Knocklyon?
Shading from trees, chimneys, or nearby buildings can reduce output significantly. Modern systems use optimisers or microinverters so that shading on one panel doesn't drag down the whole system. Your installer will assess shading during the site survey.
Do I need planning permission for solar panels?
Most residential solar installations are exempt from planning permission, provided panels don't project more than 15cm from the roof and don't cover more than 50% of total roof area.
Sources
- SEAI — Solar Electricity Grant
- SEAI — Find a Registered Professional
- Revenue — 0% VAT on Solar Panels
- PVGIS — EU Joint Research Centre (solar irradiance data)
- CSO — Census of Population 2022
- Met Eireann — Climate Data
Last updated: March 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
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